Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang vat vo snippets" » "dang van vo snippets", "dong vat vo snippets", "dang nhat vo snippets", "dang vat va snippets", "dang va vo snippets", "dang vat co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dang vat vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vat vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vat vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.